Suction Cup Child Restraint Lock for Sliding Doors/Windows

ABSTRACT

A child restraint device for preventing children from opening sliding doors or sliding windows, the device having a suction cup on each end of a handle, the suction cups being adapted to be attached to sliding door or sliding window panes that are disposed in different planes.

TECHNICAL FIELD

This invention relates a child restraint device for preventing children from opening sliding doors or sliding windows.

BACKGROUND

Children too young to be out of the supervision of their parents have been known to open sliding doors or windows in a building to an unsupervised or dangerous area. Some of these young children have learned how to unlock doors and/or windows.

A common way to lock a sliding door is to use a device similar to just the lower leg 2 of a locking device shown in U.S. Pat. No. 7,731,252 to Stewart. But some young children quickly learn how to remove such a locking device, which can simply be called a “broom stick” in order to open a sliding door.

Accordingly, there is a need for a simple and easy to use auxiliary locking device for use by an adult to lock a sliding door or sliding window for the purpose of keeping a child from opening such door or window.

SUMMARY OF THE INVENTION

The present invention relates to a simple auxiliary child restraint lock for sliding doors and window using a pair of suction cups with a handle between them, the suction cups being disposed, at least at times, indifferent planes in order to attach securely to adjacent sliding door or window panes that lie in different planes.

BRIEF DESCRIPTION OF THE DRAWINGS

The above needs are at least partially met through provision of the apparatus described in the following detailed description, particularly when studied in conjunction with the drawings, wherein:

FIG. 1 is an is a side elevational view of a sliding glass door, where typically one of the panes of glass is stationary and the other pane of glass slides in a track from side to side to open or close it;

FIG. 2 is an is a side elevational view of a sliding window, where typically one of the panes of glass is stationary and the other pane of glass slides in a track up or down to open or close it;

FIG. 3 is a cross sectional view taken along line 3-3 of FIG. 1;

FIG. 3A is an enlarged side elevational view of the suction cup device of FIG. 1;

FIG. 4 is a cross sectional view taken along line 4-4 of FIG. 2;

FIG. 4A is an enlarged side elevational view of the suction cup device of FIG. 2;

FIG. 5A is a cross sectional view through one of the suction cups of FIGS. 1-4 showing a cam lever up so that the suction cup is released from a pane of glass upon which it is close to;

FIG. 5B is a cross sectional view through one of the suction cups of FIGS. 1-4, like FIG. 5A, but showing a cam lever down so that the suction cup is attached to the pane of glass;

FIG. 6A is a side elevational view of an alternate embodiment of the present invention which has a flexible handle portion so that the two suction cups can attach easily to panes of glass or the like which are either in the same plane or not in the same plane and a threaded member that allows the length of the handle to be lengthened by rotating one suction cup with respect to the other in one rotary direction and shortened by rotating one of the suction cups in the opposite direction;

FIG. 6B is a side elevational view of the alternate embodiment of FIG. 6A showing that the handle is flexed so that the two suction cups can attach easily to panes of glass or the like which are not in the same plane and that the threaded member has been used to shorten the handle as compared to the length of the handle in FIG. 6A;

FIG. 7 shows an embodiment like the FIGS. 1-5 device, but it has a lengthening/shortening adjustment device, which is a strap will a plurality of holes in it attached to one part of the handle and the strap can slide in or out of a slot in the other part of the handle and a pin placed into a hole in the handle and through the chosen one of the holes in the strap; and

FIG. 7A is a view along line 7A-7A of FIG. 7 to show the length adjusting mechanism.

Elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions and/or relative positioning of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of various embodiments of the present invention. Also, common but well-understood elements that are useful or necessary in a commercially feasible embodiment are often not depicted in order to facilitate a less obstructed view of these various embodiments of the present invention. Certain actions and/or steps may be described or depicted in a particular order of occurrence while those skilled in the art will understand that such specificity with respect to sequence is not actually required. The terms and expressions used herein have the ordinary technical meaning as is accorded to such terms and expressions by persons skilled in the technical field as set forth above except where different specific meanings have otherwise been set forth herein.

DETAILED DESCRIPTION

Referring now to the drawings, wherein like reference numerals indicate identical or similar parts throughout the several views, FIGS. 1-5 show an auxiliary child restraint lock 10 for sliding doors and windows constructed in accordance with the present invention.

A preferred embodiment of the present invention 10 is shown in FIG. 1 attached to sliding door panes 1 and 2 to keep the door pane 2 from sliding with respect to the door pane 1, or vise versa. FIG. 2 shows embodiment 10 of the present invention 10 attached to sliding window panes 3 and 4 to keep the window pane 4 from sliding with respect to the window pane 3, or vise versa.

Referring now to FIGS. 3 and 3A, the handle 10 f is rigid and has a first suction cup 10 sc attached to a pane of glass 2 along plane A, one side of the glass pane 2. The other suction cup 10 sc is attached to the pane of glass 1 along one side of the glass on plane B. A frame 1 f holds glass pane 1 in place and a frame 2 f holds pane of glass 2 in place. It will be understood, of course, that the panes 1 and 2 can be double or triple panes for insulation purposes so just a single pane is shown for explanation purposes herein.

Referring now to FIGS. 4 and 4A, the handle 10 f has one of the suction cups 10 sc attached to a pane of window glass 3 along plane C, one side of the window glass pane 3. The other suction cup 10 sc is attached to the pane of glass 4 along one side of the window glass on plane D. A frame 3 f holds glass pane 3 in place and a frame 4 f holds pane of glass 4 in place. It will be understood, of course, that the window panes 3 and 4 can be double or triple panes for insulation purposes so just a single window pane is shown for explanation purposes herein.

FIG. 5A shows a typical suction cup device 10 of the type which can be used in this invention. But other suction cup structures known in the prior art, such as that shown in U.S. Pat. No. 5,087,005 to Holoff (incorporated herein by reference in its entirety), are fully equivalent to the suction cup structure shown in FIGS. 5A and 5B. In fact, even an old fashioned suction cup that has no mechanical parts to help attach it or disconnect it is intended to be covered by the two words “suction cup” as used in this document.

FIG. 5A shows the suction cup 10 c having a rod 10 r attached thereto, the rod 10 r extending up through an opening in the top of the handle frame 10 f and a compression spring 10 s pushing rod 10 r away from the suction cup 10 sc. In FIG. 5A the suction is released that holds the suction cup 10 sc from the glass pane 1 when the cam member 10 c and handle 10 ch is pivoted about a pin 10 p to the position shown in FIG. 5A. In order to attach the suction cup 10 sc to the glass pane 1, the device shown in FIG. 5A would be pushed down to the position shown in FIG. 5B and the cam 10 c would be moved to the FIG. 5B position using handle 10 ch. The suction cup 10 sc would be held to the glass pane 1 until and unless the cam 10 c would be moved back to the FIG. 5A position. Of course, since both suction cups 10 sc are shown to be identical on both ends of the handle 10 f, only one suction cup 10 sc will be described herein.

In operation of the device 10 shown in FIGS. 1-5B to serve as an auxiliary locking restraint for a young child on a sliding door as shown in FIG. 1, an adult person would grasp the handle 10 f of the device 10A and push the suction cups 10 c against the respective panes of glass 1 and 2 shown in FIGS. 1-5A. Then the cam 10 c would be moved from the position shown in FIG. 5A to the position shown in 5B while holding the suction cups 10 sc against the respective panes of glass 1 and 2. By placing the device 10 higher than a child can reach it serves as an auxiliary child restraint lock to prevent the child from sliding the door 2 open even if the child has figures out how to otherwise unlock the sliding door.

In operation of the device 10 shown in FIG. 2 to serve as an auxiliary locking restraint for a young child on a sliding window, an adult person would grasp the handle 10 f of the device 10A and push the suction cups 10 c against the respective panes of glass 3 and 4 shown in FIGS. 5A and 5B. Then the cam 10 c would be moved from the position shown in FIG. 5A to the position shown in 5B while holding the suction cups 10 sc against the respective panes of glass 3 and 4. By placing the device 10 higher than a child can reach it serves as an auxiliary child restraint lock to prevent the child from sliding the window 4 open even if the child figures out how to otherwise unlock the sliding window.

Referring now to FIGS. 6A and 6B, a device 100 is shown having a first and second handle frame ends 10 f with first and second suction cups 10 sc thereon. A semi-rigid but someone flexible portion 100 f is attached between parts 10 f and 100 ts of the device 10. This allows the device to be used on a flat surface in one plane as shown by U.S. Pat. No. 5,087,005 to Holoff, but also allows it to be used on glass panes in different planes by bending the semi-rigid but flexible portion 100 f as shown in FIG. 6B so that it could be used in the same fashion as the device 10 in FIGS. 1 and 2. An advantage of the device 100 over the device 10 is that the distance between the panes of glass can be different and the flexibility of the device 100 can accommodate those differences, wherein the device of FIGS. 1-5A is built to be used between the most common distances between panes of sliding doors and windows with a certain amount of tolerance from the chosen fixed distances between planes due to the flexible nature of the suction cups 10 sc themselves.

The device 100 also has a feature, including a threaded rod 100 tr to adjust the length of the handle between the two ends of the handle frame 10 f. The threaded rod 100 tr extends into the handle part 10 f on the left side of FIG. 6A and extends in an internally threaded handle part 100 ts. By rotating the right side of the handle including the internally threaded part 100 ts in a first rotary direction, the device 100 will become shorter as shown in FIG. 6B. To make the handle of the device 100 longer, i.e. move the suction cups 10 sc farther apart, the right side of the device 100, including the internally threaded part 100 ts in an opposite rotary direction from the first rotary direction, the suction cups 10 sc will again be moved farther apart, i.e. for example back to the length shown in FIG. 6A or longer.

Turning now to FIG. 7, the device 200 is just like the device 10 of FIGS. 1-5B except that it has an adjusting mechanism including a strap 200 s with a plurality of holes 200 h in it. The strap 200 s is disposed into and fixed with respect to the left hand part of the handle frame 10 f and can slide into or out from an opening in the right side handle part 10 f as shown in FIG. 7. FIGS. 7 and 7A show how a pin 200 p can be placed through an opening perpendicular to the axis of the holes 200 h and the pin can be used to lock the two sided of the device 200 in a desires spaced apart distance. This feature is useful when the distance between window panes 201 and 202 can be variable from one siding door to another one, or from one sliding window to a different one. In effect it allows the suction cups 10 sc to operate in a more optimum fashion so the that peripheral edges of the suction cup 10 sc is more naturally in the same plane as the plane of the corresponding window pane regardless of how far the two window panes are spaced apart, within certain tolerances.

A flexible plastic or rubber sleeve cover 200 c, shown in FIGS. 7 and 7A, provides access to the pin 200 p and strap 200 s when adjusting the length of the handle housing 10 f, but allows the pin 200 p and strap 200 s to be covered up once the appropriate adjustment has been made.

It is noted that this device 10/100/200 can also hold the panes in any desired fixed position, i.e. fully open, fully closed or anywhere in between. So if it is desired to have a door (or window) cracked for air, using the present invention this can still be done while still acting as a restraint to prevent a child from opening the sliding door or window further.

Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above described embodiments without departing from the spirit and scope of the invention, and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the inventive concept as expressed by the attached claims. 

1. An apparatus comprising: a rigid handle having a first end and a second end; a first suction cup operatively attached to the first end, the first suction cup having an outer periphery disposed in a first plane; and a second suction cup operatively attached to the second end, an outer periphery of the second suction cup being disposed in a second plane.
 2. The apparatus of claim 1 wherein the first suction cup is operatively attached to a post extending from the suction cup through an opening in the first end of the handle; a compression spring disposed around the post and between a portion of the handle and the suction cup; a cam member pivotally attached to the post, the cam member having a first position for pushing the post and the suction cup in one direction with respect to the handle and a second position allowing the post and suction cup to move in an opposite direction by the force of the compression spring.
 3. The apparatus of claim 1 comprising a sliding door with a first glass pane disposed along the first plane and having the first suction cup attached thereto along said first plane, the siding door having a second glass pane disposed along a second plane and having the second suction cup attached thereto along said second plane.
 4. The apparatus of claim 1 comprising a sliding window with a first glass pane disposed along the first plane and having the first suction cup attached thereto along said first plane, the siding window having a second glass pane disposed along a second plane and having the second suction cup attached thereto along said second plane.
 5. (canceled)
 6. (canceled)
 7. (canceled)
 8. (canceled)
 9. An apparatus comprising: a handle having a first end and a second end; an adjusting mechanism in the handle for adjusting the length of the handle; a first suction cup operatively attached to the first end, the first suction cup having an outer periphery disposed in a first plane; and a second suction cup operatively attached to the second end, an outer periphery of the second suction cup being disposed in a second plane.
 10. The apparatus of claim 9 wherein the first suction cup is operatively attached to a post extending from the suction cup through an opening in the first end of the handle; a compression spring disposed around the post and between a portion of the handle and the suction cup; a cam member pivotally attached to the post, the cam member having a first position for pushing the post and the suction cup in one direction with respect to the handle and a second position allowing the post and suction cup to move in an opposite direction by the force of the compression spring.
 11. The apparatus of claim 9 comprising a sliding door with a first glass pane disposed along the first plane and having the first suction cup attached thereto along said first plane, the siding door having a second glass pane disposed along a second plane and having the second suction cup attached thereto along said second plane.
 12. The apparatus of claim 9 comprising a sliding window with a first glass pane disposed along the first plane and having the first suction cup attached thereto along said first plane, the siding window having a second glass pane disposed along a second plane and having the second suction cup attached thereto along said second plane.
 13. The apparatus of claim 9 wherein the adjusting mechanism changes the distance between the first plane and the second plane.
 14. The apparatus of claim 9 wherein the adjusting mechanism includes a first member attached to the first end of the handle, the first member having a plurality of holes therein along its length; and wherein the second end of the handle has a first opening therein for slidably receiving the first member and a transversely disposed second opening for receiving a pin therethrough, the pin being selectively received in one of the hole in the first member for holding the first end of the handle from moving with respect to the second end of the handle.
 15. The apparatus of claim 9 wherein the adjusting mechanism includes a first member attached to the first end of the handle, the first member having external threads along its length; and wherein the second end of the handle has a first opening therein with internal threads for threadably receiving the first member for holding the first end of the handle from moving with respect to the second end of the handle and whereby rotating the first end of the handle with respect to the second end of the handle in a first rotary direction will cause the first and second suction cups to move farther apart with respect to each other and rotating the first end of the handle with respect to the second end of the handle in a rotary direction opposite to the first rotary direction will cause the first and second suction cups to move closer together.
 16. The apparatus of claim 1 wherein the first and second planes are spaced apart.
 17. The apparatus of claim 16 wherein the second plane is parallel to the first plane.
 18. The apparatus of claim 1 wherein the first and second planes are spaced apart and the first and second suction cups are connected together by a rigid suction cup spacing means for holding the first and second suction cups in place so that the first and second planes are always spaced apart and the first and second planes are always parallel to each other. 